If you switch barrels on the MG34 double drum with an empty magazine you should put a new magazine in instead of replacing the empty one.
you put the same empty mag back into the gun after doing a barrel swap.
Im not sure how this works with the belt fed.
For the single drum because it hangs off to the left, which when the gun is flipped around becomes the right, it is out of the way of the barrel and stays on the weapon while doing a barrel swap. The double drums right side drum would block the barrel from coming out so the drum is removed before doing a barrel swap.
Can someone with the MG Belt please comment on how that works?
simple solution:
Get rid of the silly saddle clip, as far as I'm aware they weren't that common...
They should just give you belts, and the unlock being if you hit reload while using a belt you clip another one onto the end..